In this section
A defect is present in the lower part of the "Atrial Septum"
(the partition separating the Atriums). This allows red blood to
pass through into the right side of the heart, leading to
enlargement of the right ventricle and excessive flow in the lung
circulation. This type of ASD is less common than the "central"
Defects of this type are more likely to lead to symptoms during
childhood. Abnormalities of one or more heart valves
(especially the Mitral Valve) frequently coexist with defects of
this type and and may result in early onset of symptoms with
breathlessness, poor feeding and slow weight gain.
These defects require surgery and cannot be closed with a
'Device'. The operation involves sewing a patch over the
defect and repairing the abnormal valve (Mitral Valve) which
usually needs to be attended to, to try to stop it 'leaking' - a
problem which is usually present in children with this type of